Search found 186 matches

by tomtom50
Jul 28 2019 7:13pm
Forum: E-Bike Technical
Topic: Best geared hub motor for slow climbing
Replies: 17
Views: 1785

Re: Best geared hub motor for slow climbing

I bought a Aikema Q128H because it is 800W and a slow (200rpm) wind, but still you can't climb slower than 8mph (700C) before it gets inefficient and generates too much heat. Fortunately it is powerful enough so I can manage 8mph up pretty steep hills. The only better geared motor for climbing is th...
by tomtom50
Jun 30 2019 7:17am
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 3461
Views: 159096

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

I'm glad to see some work on the human torque reading. My TSDZ2 flatters me daily, my old bones push 200W so easily... A decent check could be done with rollers. On zero assist pedal a while at a steady speed and get a good human watts reading. Then in the same gear use throttle only to reach the sa...
by tomtom50
Mar 26 2019 9:56pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

casainho wrote:
Mar 25 2019 6:10am
I updated the wiki page with more information about the magnetic brake sensors, including a link for a shop: https://github.com/OpenSource-EBike-fir ... ke-sensors
Nice explainer!
by tomtom50
Mar 25 2019 12:02am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

Hi, my rear hub pawls have just expired with the extra loading of the motor and human combo. Has anyone any experience with a Nexus 8 speed hub or something similar as an alternative option ? Rohloff's are way to expensive, any ideas ? I just built a Shimano Nexus 8 wheel and tried it out. Everythi...
by tomtom50
Mar 17 2019 11:47am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

What is, in your experience of fried motors and temperature readings, the safe Amperage we can set for the TSDZ2 in order to keep the temperature under acceptable limits? I've actually set 16A (with 36v means about 500w) and does not seem the motor heats up much. I use low gears when climbing, such...
by tomtom50
Mar 16 2019 1:24pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

Does anybody know how the tsdz2 torque sensor rotary transformer can work only with two wires? https://www.omega.com/literature/transactions/volume3/force3.html http://www.sensorland.com/HowPage075.html I showed it to a very smart electrical engineer at work, and he was impressed by the simplicity....
by tomtom50
Mar 16 2019 1:23pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

Does anybody know how the tsdz2 torque sensor rotary transformer can work only with two wires? https://www.omega.com/literature/transactions/volume3/force3.html http://www.sensorland.com/HowPage075.html I showed it to a very smart electrical engineer at work, and he was impressed by the simplicity....
by tomtom50
Mar 09 2019 7:01pm
Forum: Motor Technology
Topic: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor
Replies: 3461
Views: 159096

Re: TSDZ2 mid drive -- Flexible OpenSource firmware for TongSheng TSDZ2 mid drive motor

Thanks for the contribution, I don't know English, so I use Google Translate, I would like to ask, I have a 350w 36v tsd z2 xh18, if I brush the firmware, can I have more power and speed? You can increase power two ways: 1. Increase the allowed amperage in the manufacturer firmware. 2. Install the ...
by tomtom50
Feb 28 2019 4:44pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

I've read that the TSDZ2 motor is very fast on temperature. Therefore, I was wondering if in the summer, with an outside temperature of 25 degrees, it is possible to cycle for a long time (30min) on 35km/h. This on a flat road. Does anyone have experience with this? Use bikecalculator.com I ran 80k...
by tomtom50
Feb 24 2019 4:09pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

If you open the tsdz2 cover to get acces to the controller , change the cover screws. After opening it twice , i've now got two stripped screw heads. Resized_20190224_205530_4339.jpeg Various epoxies claim to fix this type of failure, but they replace a material that failed with something weaker. T...
by tomtom50
Feb 24 2019 3:58pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

hi everyone. i read a lot of the posts in this thread but i still need some help for my build. i have a cannondale prestige rohloff bike and want to transform it to e-bike. i prefer the tsdz2 way because i dont want to skip pedaling. i didnt understand what build is better. 36v motor with 48 batter...
by tomtom50
Feb 23 2019 10:21am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

Yes, this is my only concern too, but I feel confident about having a buddy machine an offset to match the chainline! Also, in my experience, the TSDZ2 usually lines up nicely with the IGH cog, so hopefully that wouldn't even have to happen, although we are prepared for it. I will try one soon and ...
by tomtom50
Feb 22 2019 11:12pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

I am always checking out good conversion candidates... I think this bike would be very good for a commuter conversion...belt drive and IGH... I would do a 36v witha stealth bottle battery...what do you guys think?> https://www.prioritybicycles.com/products/continuumonyx Would a belt cog at the cran...
by tomtom50
Feb 20 2019 7:48pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

I don't have the motor yet but from what I gathered from forum it might be an issue. Problem is, I don't have front derailleur and one and only chainring sits 5-10mm from the bb. Found somewhere on this topic that tsdz2 when installed is going to sit 50mm from the bb. 50mm from the CENTER of the BB
by tomtom50
Feb 20 2019 7:46pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

While still waiting for tsdz2 to arrive it looks to me like chainline offset made by tsdz2 might be an issue. I have shimano nexus 8 IGH. So how big of an issue is this going to be? From what I gathered chainring is sticking 50mm more to the right with tsdz2 and 42t chainring that comes with it has...
by tomtom50
Feb 19 2019 10:07am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

raylo32 wrote:
Feb 19 2019 7:54am
Thanks, Tom. Where can we find the tutorial?
https://endless-sphere.com/forums/viewt ... 8#p1444718
by tomtom50
Feb 19 2019 12:40am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

Thanks for sharing, this is the first time I see pictures of such a thing and description. I also use the 34T at front and 50T rear -- I have 9 speed and I found on ebay 9 speed with max plate of 50T and works as expected. And at the city, with the same bicycle, I use a large plate at front like 52...
by tomtom50
Feb 19 2019 12:36am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: Open Source / Stock Firmware Tutorial

This is great stuff you did there. This should be part of the Wiki pages of OpenSource firmware. I'm positively sure a lot of users are put off by the amount of digging through the forums required to pull this of correctly the first time. :bigthumb: Thanks! Looking to add to the wiki, just don’t kn...
by tomtom50
Feb 19 2019 12:32am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

After a lot of research I finally ordered tsdz2 48V 750W with brakes and throttle. Now I need to get the battery for it. One option is 48V 10.4AH Li-ion Dolphin E-Bike Battery with Charger Made of LG LGEBM261865 http://www.pswpower.com/ven.php?cargo.2017-5f-31t0 Another is 48V 11.6Ah with Samsung 2...
by tomtom50
Feb 19 2019 12:25am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

My experience is that the Nexus 8 is more resistant than the Nexus 7. Bosch motors used on IG bikes have a different version of firmware that lowers the max torque with at least 20%. Their technicians explained me that they do that because there were too much problems with IG durability. This has b...
by tomtom50
Feb 19 2019 12:17am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

I've been looking at the open source firmware, read a lot of the install instructions and seen some good videos. Pretty impressive stuff and I really like all the data that is available... volts, amps, power, etc., as well as all the settings. The flashing and all is pretty straightforward, not unl...
by tomtom50
Feb 18 2019 5:27pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

Double-posted. Not sure how that happened.
by tomtom50
Feb 18 2019 5:24pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

Hi Knutsel. Thank you for your reply. Not what I was hoping to hear, as I've eyeing this motor for a while. The only thing I can compare it to is my BBS02 750w 48v and it is very heavy duty (like a motorbike). But I actually miss the "real" bicycle experience as I mostly use the throttle (it has no...
by tomtom50
Feb 18 2019 5:21pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5617
Views: 454612

Re: New "TSDZ2 Torque Sensor Central Motor"

Hi Knutsel. Thank you for your reply. Not what I was hoping to hear, as I've eyeing this motor for a while. The only thing I can compare it to is my BBS02 750w 48v and it is very heavy duty (like a motorbike). But I actually miss the "real" bicycle experience as I mostly use the throttle (it has no...